I am unsure how to book an agenda book/organizer that was purchased for our business. Normally I book office/organizational expenses (notebooks, printer ink, etc.) as "Office Expenses" but the cost of this particular organizer makes me feel like it should be a fixed asset.
If your business pays taxes, it is in your best interest to expense it. Even if you don't pay taxes, setting your capitalization policy low enough to capitalize an office organizer (even a nice one) will give you headaches when your business grows larger.
I cannot imagine an organizer being worth enough to consider depreciating the expense over a period of time greater than one year. Also, once you write in an organizer, it's pretty much worthless to anyone else.
Talk to your accountant if you'd like, but I cannot see how you would classify a fancy organizer as a fixed asset.